Table 2.
Effect of spaceflight on expression of double positive cell surface markers of differentiated bone marrow derived cells.
| Cell marker | Subpopulation a | Spaceflight b | Ground control b |
|---|---|---|---|
| Mac2+, c-Fms+c | Total cells | 15.9 | 1.7 |
| R1 | 12.7 | 3.6 | |
| R2 | 27.0 | 0 | |
| R3 | 19.3 | 1.3 | |
| R4 | 12.3 | 1.3 | |
| Mac2+, c-Fos+c | Total cells | 6.8 | 0 |
| R1 | 8.4 | 0.1 | |
| R2 | 24.9 | 0 | |
| R3 | 13.4 | 0 | |
| R4 | 1.5 | 0 | |
| F4/80+, CD44+ | Total cells | 3.1 | 3.2 |
| R1 | 5.8 | 5.7 | |
| R2 | 3.8 | 0 | |
| R3 | 0.5 | 1.3 | |
| R4 | 0.7 | 0.1 | |
| F4/80+, Ly6C+ | Total cells | 0.3 | 0.1 |
| R1 | 0.4 | 5.0 | |
| R2 | 0.5 | 1.4 | |
| R3 | 0.2 | 0.5 | |
| R4 | 0.1 | 0.3 | |
| F4/80+, Gr1+ | Total cells | 0.5 | 0 |
| R1 | 0.8 | 3.2 | |
| R2 | 0.4 | 0.9 | |
| R3 | 0.1 | 0.1 | |
| R4 | 0 | 0 |
a
Subpopulations established with forward vs. side scatter dot plots. R1, region 1; R2, region 2; R3 region 3; R4, region 4
b
Numbers indicate % cells above isotype control staining; 20,000 cells analyzed per sample.
c
Indicates flight sample is distributed differently from ground control as assessed by χ2 analysis.